What is the difference between the sixth and the fifth terms of the sequence 2,4,7---- whose nth term is n+2n-1?

What is the least number by which 2450 must be multiplied in order to get a perfect square?

A piece of work can be done by 70 labors in 30 days. How many labours should work daily to complete the work i...

If x:y = 5:3 then (8x-5y):(8x+5y) = ?

A toy was bought for Tk 75 and sold at a gain of 8%. What was its selling price in Tk ?

If a man's salary is 20% more than that of his son, how many percent is the son's salary if compared to the sa...

A woman is 30 times older than her son. 18 years later she will be thrice as old as her son. What is the woman...